Electric bell.



H. E. REF-VB.

ELECTRIC BELL. APPLICATION IILBD FEB. 12, 1910.

Patented Feb. 3, 1914.

WITNESSES.

COLUMBIA PLANOGRAPH Cb WASHINGTON, D C.

UNITED STATES PATENT OFFICE.

HENRY E. REEVE, OF NEW YORK, N. Y.

ELECTRIC BELL.

Specification of Letters Patent.

Patented Feb. 3,1914.

Application filed February 12, 1910. Serial No. 543,615.

To all whom it may concern Be it known that I, HENRY E. Rnnvn, a citizen of the United States, residing at New York, in the county of Kings and State of New York, have invented certain newand also to reduce the liability of the parts working loose or becoming disengaged through ordinary use.

Figure 1, is a front View of apparatus embodying the improvements of my invention. Fig. 2, is a cross sectional view of the bell and its support on the plane of the line X X of Fig. 1. Fig. 3, is av perspective view of the support and adjusting device for the bell, the parts being separated.

In the form that I have shown in Fig. 1 the box or casing or frame 8 laterally incloses a horse-shoe electro-magnet 2 and its pivoted armature 3. The striker 4: projects from the casing in proximity to the bell or gong 5 which is carried by the supporting bracket or extension 6 of the casing. A spring such as 7 may be employed when desired to oppose the action of the electro magnet. The contact spring 8 and the contact screw 9 normally engaged thereby are in the circuit with the coils of the magnet as is customary. The armature 3 may have a yielding spring or extension 10 for engaging the contact spring 8. The wire connector 100 is clamped by nut 103 to the piece 101 and is positioned in a notch, passage or recess in the upturned portion 102 to prevent it from turning. The other terminal may be the same. The contact screw 9 is carried by a bracket 19 and frictionally held by a spring 20.

When the internal mechanism of the apparatus is properly adjusted it is often found that the striker or hammer is too close to or too far from the bell itself. For the purpose of correcting this I have provided means for adjusting the bell to and from the striker without affecting the rest of the apparatus and without rotating the bell itself. The bell has a central passage as is customary and also has a projection or pin 23 which extends into a recess or slot 24 in the upright or support 6. This prevents the bell from rotating relative to the support but does permit it to be moved somewhat toward and from the striker or hammer. Obviously the location of the pin and slot might be interchanged, the pin. being on the support and the slot in the bell. The circular boss 25 has a passage 26 located eccentrically of its axis so that the boss is in fact a cam and it fits into the usual cen tral opening or passage in the bell. A screw 27 passes freely through this cam 25 and screws into the support 6. Integral with or securely attached to the cam 25 I have provided the operating arm 28 which is slotted as at 29 to receive the tip of a screwdriver blade or other similar instrument. lVhen the screw 27 is somewhat loosened a screw-driver may be inserted in slot 29 and the arm 28 and cam 25 then rotated in one direction or the other so as to cause the bell to be moved toward or from the striker 4. As the bell is not rotatable the tendency of the adjustment to work loose and shift is reduced to a minimum. Where the adjustment is made by means of a hole in the bell ofl' center the considerable leverage at the bell edge renders easy an accidental shift of adjustment. This I avoid. Preferably the central opening in the bell is undercut and the adjusting member 25 is enlarged at the edge 52 so that when the screw 27 is re moved the member 25 will not fall out and get lost. The arm 28 serves as a sort of 'washer so that when the screw 27 is tightthe support or post 6.

What I claim is 1. In an electric bell construction, a support, a bell mounted on the support and held against rotation thereon, a cam rotatably mounted on the support and engaging the bell to effect a lateral adjustment of the bell as said cam is rotated, and means for clamping the bell in adjusted position upon the support.

2. In a bell construction, a support having a threaded recess, a bell having a substantially circularopening, means for preventing rotation of said bell, a cam fitting in said opening and having a passage eccentrio to its axis, a screw passing through said cam and taking into the threaded recess in said support.

In a bell construction, a support having a threaded recess, a bell having a substantially circular opening, means for preventing rotation of said bell, a cam fitting in said opening and having a passage eccentric to its axis, a screw passing through said cam and taking into the threaded recess in said support and an operating arm for rotating said cam.

4;. In a bell construction, a recessed support, a bell having an opening, a cam fitting in said opening and having an eccentric passage, a slotted operating arm for said cain and a locking member passing through said passage into the recess in said support.

In a bell construction, a support having a central recess and an elongated slot 'adial thereto, a bell having a central opening and a projection adjacent thereto guided in said slot, an eccentrically operated cain in said bell opening and a pivot nielnber passing through said cam and into said support.

6. In an electric bell construction, a support, a vibrating striker, a laterally adjustable l'ion-rotatable bell on said support and having a central circular opening, a boss rotatable in said opening and having a passage eccentric to the opening in the bell, and a screw passing through said passage and screwed into said support and serving when loose as a pivot for said boss and when tight to clamp said boss and bell.

HENRY Rnnvn.

Witnesses R0131. S. ALLYN, E. BRADFORD.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C." 

